Investigating the associations between a dual diagnosis of malnutrition and obesity and length of stay, readmissions, and 12-month mortality in patients aged >65 yrs admitted to hospital - A retrospective observational single-centre study.

Objective: Despite the protective effect of obesity on mortality in older patients, the dual diagnosis of obesity and malnutrition may worsen outcomes. This study aimed to investigate whether obese patients aged 65 years and over with a diagnosis of malnutrition have different outcomes to obese, non-malnourished peers.

Methods: This retrospective study of inpatients included 9 years of data from annual Malnutrition Audits (2011-2019).